class  xuexi{
	public static void main(String[] args){
		int a=20;
		int b=20;
		boolean bo1=(++a%3==0 && a++%7==0);
		boolean bo2=(b++%3==0 && ++b%7==0);
		System.out.println(a);
		System.out.println(bo1);
		System.out.println(b);
		System.out.println(bo2);
	}
}
